20423014442273 has 2 divisors, whose sum is σ = 20423014442274. Its totient is φ = 20423014442272.

The previous prime is 20423014442143. The next prime is 20423014442321. The reversal of 20423014442273 is 37224441032402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19274137013824 + 1148877428449 = 4390232^2 + 1071857^2 .

It is a cyclic number.

It is not a de Polignac number, because 20423014442273 - 2³² = 20418719474977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20423014441273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211507221136 + 10211507221137.

It is an arithmetic number, because the mean of its divisors is an integer number (10211507221137).

Almost surely, 2^{20423014442273} is an apocalyptic number.

It is an amenable number.

20423014442273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423014442273 is an equidigital number, since it uses as much as digits as its factorization.

20423014442273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 38.

Adding to 20423014442273 its reverse (37224441032402), we get a palindrome (57647455474675).

The spelling of 20423014442273 in words is "twenty trillion, four hundred twenty-three billion, fourteen million, four hundred forty-two thousand, two hundred seventy-three".